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Finding the Fourth Proportional to 60,985.40, 91,434.90 and 27,721.40

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Solution

The fourth proportional to 60,985.40, 91,434.90 and 27,721.40 is: 41,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,985.40 : 91,434.90 = 27,721.40 : x
  2. Step 2: Convert to fraction form
    60,985.40/91,434.90 = 27,721.40/x
  3. Step 3: Cross multiply
    60,985.40x = 91,434.90 × 27,721.40
  4. Step 4: Simplify right side
    60,985.40x = 2,534,703,436.86
  5. Step 5: Solve for x
    x = 2,534,703,436.86/60,985.40
  6. Step 6: Final answer
    x = 41,562.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.